On Tue, Mar 14, 2006 at 11:11:00AM -0500, Jun'ichi Nomura wrote:
> Hello,
>
> In 2.6.16-rc6 (probably in earlier rc as well),
> following build error occurs with CONFIG_SYSFS=n.
>
> kernel/built-in.o(.data+0x1d40): undefined reference to `uevent_helper'
> lib/lib.a(kobject_uevent.o)(.text+0x5c1): In function `kobject_uevent':
> /build/rc6/source/lib/kobject_uevent.c:152: undefined reference to `uevent_seqnum'
> lib/lib.a(kobject_uevent.o)(.text+0x5d0):/build/rc6/source/lib/kobject_uevent.c:152: undefined reference to `uevent_seqnum'
> lib/lib.a(kobject_uevent.o)(.text+0x901):/build/rc6/source/lib/kobject_uevent.c:182: undefined reference to `uevent_helper'
> lib/lib.a(kobject_uevent.o)(.text+0x910):/build/rc6/source/lib/kobject_uevent.c:182: undefined reference to `uevent_helper'
>
> This seems to be caused by mismatch of build condition.
> uevent_seqnum and uevent_helper are conditional to CONFIG_SYSFS.
> While they are referenced if CONFIG_HOTPLUG (and CONFIG_NET) is enabled.
>
> Attached patch consolidates them to CONFIG_HOTPLUG && CONFIG_NET.
>
> I tried with (!CONFIG_NET && CONFIG_SYSFS) and
> (CONFIG_NET && !CONFIG_SYSFS).
> Both built ok.
> So I think it doesn't conflict with "[PATCH] kobject_uevent CONFIG_NET=n
> fix" which is in 2.6.16-rc6.
>
> Thanks,
> --
> Jun'ichi Nomura, NEC Solutions (America), Inc.
> CONFIG_SYSFS=n fails to build due to mismatch of conditions
> for uevent_seqnum and uevent_helper.
>
> kernel/built-in.o(.data+0x1d40): undefined reference to `uevent_helper'
> lib/lib.a(kobject_uevent.o)(.text+0x5c1): In function `kobject_uevent':
> /build/rc6/source/lib/kobject_uevent.c:152: undefined reference to `uevent_seqnum'
> lib/lib.a(kobject_uevent.o)(.text+0x5d0):/build/rc6/source/lib/kobject_uevent.c:152: undefined reference to `uevent_seqnum'
> lib/lib.a(kobject_uevent.o)(.text+0x901):/build/rc6/source/lib/kobject_uevent.c:182: undefined reference to `uevent_helper'
> lib/lib.a(kobject_uevent.o)(.text+0x910):/build/rc6/source/lib/kobject_uevent.c:182: undefined reference to `uevent_helper'
>
> Signed-off-by: Jun'ichi Nomura <[email protected]>
>
>
> --- linux-2.6.16-rc6.orig/lib/kobject_uevent.c 2006-03-14 08:57:23.000000000 -0500
> +++ linux-2.6.16-rc6/lib/kobject_uevent.c 2006-03-14 08:52:57.000000000 -0500
> @@ -26,6 +26,9 @@
> #define NUM_ENVP 32 /* number of env pointers */
>
> #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
> +u64 uevent_seqnum;
> +char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
No, the seqnum and helper can be called even if we have not defined
CONFIG_NET. Please redo the patch based on this.
thanks,
greg k-h
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